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Not all have the hole. And not all have the part number. The repros are pretty good but they have a horseshoe stamp that they claim is correct. I have never seen an original with the horseshoe stamp. Also there are a few repro companies making them. Some of them are completely incorrect.
I have one on a 69 427/390 that does not have the hole or number stamp but the car is pretty much untouched and I'm convinced its original. But I have seen what I believed were original cars that did have the hole and number. If you look in Dobbins book which was printed before they made repros of the brackets you will see pictures of them with a small hole. Also I'm not sure all were painted silver. I've seen some painted orange as well as silver. And I'm not sure all of what I've seen was completely original. With that said, I can't say for sure what they really did with consistency back then and if they had a standard approach as to what was done with the brackets except to use them to drop the motor in the car.
what color is the one on your 69/390 ? since you said no hole it's not the one in your picture.Thanks
WD40 with 1500 grit wet sandpaper. Then take your favorite aluminum polish and go to town. Takes a little work and time but what doesn't. Hope this helps.
R
They do look great ! And correct.....look like right out of the box
That's the exact method I used to redo my Z28 covers. I even filed the screwdriver nicks out of the fins . Was a lot of work , but the detail is what sets a good car apart from the rest.
All those cars with the dulled bead blaster or sand blasted is totally are wrong....... But it seems popular as a short cut many many people use instead achieving the correct finish with a lot of hard work.
Last edited by LS4 PILOT; Mar 10, 2016 at 11:53 PM.